Answer:
MPC = 0.75
MPS = 0.25
Disposable income = amount spent on consumption + amount saved
Marginal Propensity to Consume + Marginal Propensity to Save = 1
Explanation:
Marginal propensity to consume is the proportion of disposable income that is spent on consumption
Marginal propensity to consume = amount consumed / disposable income
Marginal propensity to save is the proportion of disposable income that is saved
Marginal propensity to save = amount saved / disposable income
MPC + MPS = 1
Disposable income = amount spent on consumption + amount saved
MPC = 600 / 800 = 0.75
MPS = 200 / 800 = 0.25